Ice-cream-freezing machine.



T. STURTEWAGEN.

IUE CREAM FREEZING MACHINE. APPLIUATION FILED MAY 1o. 1912.

1,05 1,355. Patented .15121, 191s.

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COLUMBIA PLANOORAPH C0..'WASH!NGTQN. 6.

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'UNTTED STATES PATEN T OFFICE.

THEOPHILE STURTEWAGEN, OF BATH, ENGLAND.

ICE-GREAM-FREEZING MACHINE.

.To aZZ whom t may concern Be it known that I, THnorI-IILE STURTE- WAGEN, a subject of the King of Great Britain and Ireland, residing at Bath, Kingdom of Great Britain and Ireland, have invented certain new and useful improvements in lce-Cream-Freezing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to ice-cream freezing machines of the type in which the cream container is located between an external and an internal freezing agent receptacle.

This invention has for its object to provide an impro-ved construction of machine of the said type.

ln my improved machine the three said vessels are arranged concentrically, the cream container being located between the two freezing vessels which are charged with ice and salt or other suitable freezing mixture or freezing agent employed, and the internal freezer and the cream container are adapted to be rotated in the same direction, stationary scrapers acting also as agitators or beaters being arranged to scape the interior of the cream container' and the exterior of the internal freezer. The scrapers dislodge and break up any particles or frozen lumps of cream adhering` to the surfaces on which the scrapers act.

Referring to the accompanying drawings, Figure l is a vertical sectional view of my improved ice-cream freezing machine. Fig. 2 is a plan with the cover of the cream container and the other parts above it removed. Fig. 3 is a plan.

The external freezing agent receptacle a is a pail o-r bucket. Situated concent-rically therein is the cream container Z) the cover o1 of which carries a bevel wheel c which is fixed on the cover 1 and gears with a bevel wheel Z xed on the driving spindle j. The cover b1 of the cream container Z) has fixed to it a stop o2 projecting downward from its under face. A stop 3 is fixed inside the vessel Z) and projects inwardly. By the pro vision of the stops b2 and 3 which engage each other, the vessel Z2 is driven when the machine is n action. At the under face of its bottom the vessel o has a boss ZY* which beds in a socket al fixed to the inside of the bottom of the external freezer a. The boss Specification of Letters Patent.

Application filed May 10, 1912.

Patented J an. 21, 1913.. serial no. 696,433.

b4 is a trunnion to the cream container o,

Centrally in the boss b4 is a squared or rectangular recess.

The internal freezing agent receptacle e, which is centrally situated in the cream container is open at top, and across it thereat extends a flat bar el in a hole in which loosely fits a journal or stud j projecting down from the top cross-bar g of the sta tionary frame which carries the scrapers. The vessel c is charged with ice and salt or other freezing mixture or agent such as is ordinarily employed in such machines, as also is the space between the inside of the bucket a and the exterior of the cream container o. Under the bottom of the internal freezer c is a journal which has a cylindrical part c and a part c3 which is square or rectangular in section. The cylindrical part e2 loosely fits in the bottom cross-bar /L of the stationary frame which carries the Scrapers. The square part e3 of the journal of the vessel c fits into a correspondingly squared socket provided for it in the boss bt. Consequently, the vessel c is rotated bodily with t-he cream container Z) and in the same direction.

The motion from the driving handle z' is transmitted through the spindle to the bevel wheel CZ which gears with the wheel c fixed, as aforesaid, to the cover b1 of the cream containerl b. Fixed in the cross-bars g and Zt of the scraper frame are vertical rods 7c and Z. The rod Zt' carries a vertical scraper m which is held to the rod by straps m1. The scraping' edge of thescraper m is held in contact with the internal face of the ice cream container Z1 which face it scrapes as the vessel rotates. The rod Z carries a vertical scraper n which is held to the rod Z by straps nl. The scraper n scrapes the outside of the internal freezing vessel e. From the top crossbar g of the scraper frame extends the vert-ical arm 0 which is cylindrical where it loosely passes through the cover 1 of the vessel Z1 and the bevel wheel o. Toward its upper end the arm o has a part 01 .which is square in section. This squared part fits into a correspondingly squared socket provided in the casting p which is clamped on the outer vessel a and carries the driving spindle j and the hand lever. The scraper frame is thus kept stationary while the vessels and c rotate. The crossbar ZL of the scraper frame is in contact with the inner face of the bottom of the cream container@ and acts as a scraper thereto.

What I claim is In an ice cream freezing machine, the combination of an outer freezing agent container having a bearing centrally in the bottom thereof, a cream receptacle provided with a journal to tsaid bearing, said journal having a square recess therein opening through the bottom of said receptacle, a second freezing agent container located Within said cream receptacle and having a boss projecting from the bottom thereof, said boss being circular for a portion of its length and having its end squared to fit the recess in said journal whereby said receptacle and second container may be secured to rotate together, a flat bar extending diametrically across the upper end of said second consaid Scrapers bearing against the inner Wall` of s aid receptacle, the other of said Scrapers bearing against the outer Wall of said second freezing agent container.

ln testimony whereof, I afiX my signature, in presence of tWo Witnesses.

THEOPHILE STURTEWAGEN. Vitnesses z A. E. BURT, E. H. HoLLnY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

